Unable to get the correct signature from signed pdf

Aspose.PDF Product Family
1

Hi,

I tried to use PdfFileSignature to get the signature from signed pdf, but i could not get the correct signature name. The signed name in the pdf is "William" but the program return "Signature2" to me.

The following is my code:
Try
Dim infile As String = Command()
Dim pdfSign As Aspose.Pdf.Kit.PdfFileSignature = New Aspose.Pdf.Kit.PdfFileSignature
pdfSign.BindPdf(infile)

Dim names As ArrayList
names = pdfSign.GetSignNames()

For I As Integer = 0 To names.Count - 1
Console.WriteLine("signature name:" & names(I))
Console.WriteLine("coverswholedocument:" & pdfSign.IsCoversWholeDocument(names(I)))
Console.WriteLine("revision:" & pdfSign.GetRevision(names(I)))
Console.WriteLine("verifysigned:" & pdfSign.VerifySigned(names(I)))
Console.WriteLine("reason:" & pdfSign.GetReason(names(I)))
Console.WriteLine("location:" & pdfSign.GetLocation(names(I)))
Console.WriteLine("datatime:" & pdfSign.GetDateTime(names(I)))
Next

Console.WriteLine("totalvision:" & pdfSign.GetToltalRevision())

Catch ex As Exception
Console.WriteLine("Error: " & ex.Message)

End Try

My result:
signature name:Signature2
coverswholedocument:True
revision:1
verifysigned:False
reason:
location:
datatime:2008/8/16 下午 04:01:53
totalvision:1

I attached the sample file for your checking. I am look forward to your reply. if anything is unclear, please let me know. Thank you.

Regards,
Ryan Kowk

2

Dear Ryan,

Thank you for considering Aspose.

We will investigate this issue and reply to you ASAP.

3

Hi Ryan Kowk,

Thank you for considering aspose products.

First, I must explain that the results of GetSignNames() are the signature names represent signatures themselves in the pdf document, not the name of the person or authority signing the document.

According to your requirements, we can add a interface to get the name of signatruer in the next verison.

4

Hi,

Thanks for your prompt reply.

In next version, what information of the certicate can be extracted from the pdf? I would like to know when the next version will be available.

Ryan Kwok

5

Hi,

In the next verion, we can add a interface to get the name of the person or authority signing the document, if you have any advice for the extraction, please post it.

The next version will be available approximately at the end of this month.